Auchagallon Stone Circle or Auchengallon cairn is the remains of a Neolithic or Bronze Age burial cairn, surrounded by a circle of fifteen stones.

It is located near Machrie on the Isle of Arran in Scotland (grid reference NR89293464).

The cairn and stone circle is situated on a slight ledge of a west-facing slope,[1] overlooking Machrie Bay.

Antiquarians digging here in the 19th century found a burial cist in the centre, although there are no records of any other remains.

Although the monument is now called a stone circle, it was probably built as a kerbed cairn.